Pull timer.h and time_support.h out of goodies.h

The code on both the new header files is essentially the same. This
commit just adjusted #include in dependent modules. The new headers
did not make to pch.h.

This change is in preparation for some improvements in code that is
now in time_support.h

shell/shell_utils.cpp

@@ -46,6 +46,7 @@
 #include "../util/processinfo.h"
 #include "../util/text.h"
 #include "../util/heapcheck.h"
+#include "../util/time_support.h"
 
 namespace mongo {
 #ifdef _WIN32